1
		5					1
8	1			2
		4	6			8
	6			7	5
			4			3	6
1					7
				6

Difficulty: Very easy (0)

		5	1		3	2
6
1	2					4	6
3	1					6	4
							3
	5	3		2	7

Difficulty: Harder (0)

			3
	2		7
		3					8
2	8				6
		5				6	3
8					1
				6		5
				1

Difficulty: Very easy (0)

	2			5			7
				4		3
					1
8	5						4
3						1	2
		5
	4		5
2			6			8

Difficulty: Super easy (0)